69, Miss Lan always goes to work by bus.
70, The buses are usyally very crowded.
71, But she is never late for work.
72, After class, he usually goes home and watches TV.
73, His friends sometimes give him stamps from other countries.
74, She often has to stand all the way.
75, When she comes home from work, she often feels tired.
76, She has been late 3 times this week.
77, He is always at home on Sunday.
78, I often told them to write neatly.